If cosx-t-1-t2 and siny-1-1-t2 then prove that dydx-1

sin y=1√(1+t^2) sin ^2y=11+t^2 cos^2y=t^21+t^2 cos y=t√(1+t^2) cos x=cos #160; y y=x dy=dx dydx=1 ...

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Parametric Differentiation

If cosx=t√1...

Question

If $cos x = \frac{t}{\sqrt{1 + t^{2}}}$ and $sin y = \frac{1}{\sqrt{1 + t^{2}}}$ then prove that $\frac{d y}{d x} = 1$

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